Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

TBE with stock muffler?

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Old Aug 22, 2005 | 02:46 PM
  #1  
Stevie Mo's Avatar
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From: CT.
Car Info: 05 STI silver/silver
TBE with stock muffler?

My goal is to loose 2 of the 3 cats.Free up the exhaust but keep the noise down and boost creep away.

I want to know if the stock muffler is super restrictive.I was planning on running an APS 3". Has anybody done this? Have I lost my mind? Let me know...

Flame suit on!
Steve.

05 STI.
Old Aug 22, 2005 | 04:25 PM
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From: Rockin my 6th Suby in the 808 in the past decade!
Car Info: 01 Impreza RSTi, 08 Evo MR, and 13 XV
sti muffler is actually good a lot of wrx guys like to try and get this. go with turbo xs dp,midpipe,catback adapter, and high flow or straight through cat it allows you to use the sti muffler

goodluck
Old Aug 22, 2005 | 04:40 PM
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Stevie Mo's Avatar
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Car Info: 05 STI silver/silver
4080wrx, Thanks for the info!
Old Aug 22, 2005 | 08:34 PM
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From: Driving the Green Beast
Car Info: Version 7.5 2002 STi
The STi stock muffler is good to about 380HP so it won't be restrictive with your setup.
Old Aug 23, 2005 | 06:40 AM
  #5  
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From: Rockin my 6th Suby in the 808 in the past decade!
Car Info: 01 Impreza RSTi, 08 Evo MR, and 13 XV
Originally Posted by 4080wrx
sti muffler is actually good a lot of wrx guys like to try and get this. go with turbo xs dp,midpipe,catback adapter, and high flow or straight through cat it allows you to use the sti muffler

goodluck
stevie,

i just noticed you have an 05 sti with the setup i recommended above you will delete 2 of 2 cats because the sti does not have a cat in the up pipe
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